My PC cannot detect my agp after I upgrade vga bios

[manuk]

Help, I'm very new in bios stuff..

I just upgraded bios for my ATI Radeon Gigabyte for curious, now something bad happen. I cannot use it again, I use only onboard vga which is very limited for gaming purpose.
I don't know how to fix it again...
Please could you help me how to flash again with the old one, since my PC cannot detect my vga when I plug into agp slot.
How can I flash it again with my onboard vga in use..

Thank you very much in advance...

[edwin]

What model is your Gigabyte VGA card and what bios did you flash it with? Did you try another AGP VGA card to make sure it's the card that has gone out?

[manuk]

It is old agp with driver date at 2004. I'm not sure what i'm about doing at it last days.
I don't have another vga to test it out, it just don't work after I update.
When I change the bios for the order, i.e: AGP/Internal Vga I have to remove the AGP to make the PC works with the internal VGA, otherwise my monitor can't get the picture but Windows continue running.
I tried with use Internal VGA only, but of course I can't get the AGP in my device driver, so I'm not sure if I will nvflash (it is will affect my internal vga)

I feel stupid here
Thanksss...

[edwin]

I just upgraded bios for my ATI Radeon Gigabyte for curious

again:

What model is your Gigabyte VGA card and what bios did you flash it with?